Bug 455960

Summary:	When booting on battery and plugging in power lead the brightness changes to minimum
Product:	[Plasma] Powerdevil	Reporter:	Dave Morley <davmor2>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED DUPLICATE
Severity:	minor	CC:	kwin-bugs-null, me, nate
Priority:	NOR
Version:	5.25.0
Target Milestone:	---
Platform:	Kubuntu
OS:	Linux
Latest Commit:		Version Fixed In:	5.25.1
Sentry Crash Report:

Description Dave Morley 2022-06-26 17:25:42 UTC

SUMMARY
If I boot on my Lenovo Laptop on battery and then plug in the power the brightness drops to the minimum setting but only on wayland


STEPS TO REPRODUCE
1. Install Neon User
2. Boot up on Battery
3. Plug in power

OBSERVED RESULT
Brightness drops but only when I boot on battery if I boot on Power it doesn't

EXPECTED RESULT
I expect the brightness to stay the same

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
Operating System: KDE neon 5.25
KDE Plasma Version: 5.25.0
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.4
Kernel Version: 5.13.0-51-generic (64-bit)
Graphics Platform: Wayland
Processors: 8 × AMD Ryzen 7 3700U with Radeon Vega Mobile Gfx
Memory: 9.7 GiB of RAM
Graphics Processor: AMD Radeon™ Vega 10 Graphics
Manufacturer: LENOVO
Product Name: 81NC
System Version: Lenovo IdeaPad S340-15API

ADDITIONAL INFORMATION
This may only affect my laptop type so I dropped the severity to minor

Comment 1 Nate Graham 2022-06-27 18:10:14 UTC

Can you upgrade to Plasma 5.25.1 to see if it's fixed now? I wonder if this is a variant of Bug 454161, which was fixed in 5.25.1.

Comment 2 Dave Morley 2022-06-30 17:57:07 UTC

Confirmed this is resolved in 5.25.2

Operating System: KDE neon 5.25
KDE Plasma Version: 5.25.2
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.5
Kernel Version: 5.13.0-52-generic (64-bit)
Graphics Platform: Wayland
Processors: 8 × AMD Ryzen 7 3700U with Radeon Vega Mobile Gfx
Memory: 9.7 GiB of RAM
Graphics Processor: AMD Radeon™ Vega 10 Graphics
Manufacturer: LENOVO
Product Name: 81NC
System Version: Lenovo IdeaPad S340-15API

However small gotcha is that when you first plug the power it in drops to the low level brightness but once it is raised.  It stays there I will do some further testing over the next couple of days and confirm if this is every first time the power is plugged in or just the first until the level is set.

Comment 3 Nate Graham 2022-06-30 18:07:16 UTC

Cool, thanks.

If you identify any remaining issues, please file new bug reports for them. Thanks!

*** This bug has been marked as a duplicate of bug 454161 ***